Float-controlled compound check valve



Sept. 9 1924- C. H. NORDELL FLOAT CONTROLLED COMPOUND CHECK VALVE 2 Sheets-Sheet 1 Filed Sept. 12 1922 F T W INVENTOR.

' /%m aw ATTORNE Sept. 9 1924. 1,507,790

/ c. H. NORDELL I FLOAT CONTROLLED COMPOUND CHECK VALVE Filed Sept. 12, 1922 2 Shook-Smut 2 J a I I N V EN TOR.

b By iwwm ATTORNE Patented Sept. 9, 1924.

UNITED STATES 1,507,790 PATENT OFFICE.

CARI: H. NORDEIL, OF FORT WAYNE, INDIANA, ASSIGNOR TO WAYNE TANK 8c PUMP COMPANY,

OF FORT WAYNE, INDIANA, A CORPORATION OF INDIANA.

FLOAT-CONTROLLED COMPOUND CHECK VALVE.

Application filed September, 12, 1922. Serial No. 587,838.

To all whom it may concern:

Be it known that I, CARL H. NORDELL,

a citizen of the United States, residing at Fort Wayne, in the county of Allen and State of Indiana, have invented new and useful Improvements in Float-Controlled Compound Check Valves, of which the following is a specification.

My invention relates to check valves 10 adapted to be automatically opened downwardly by the weight of comminuted solid material precipitated through the liquid above the valve, the main opening to be closed automatically by a float controlled valve as soon as the solid material passes the valve seat and the secondary openin to be closed by a secondary valve actuate by a rush of water from below.

The device consists essentially of the valve proper adapted to seat upon and close the main or feed opening; a float for said valve; a secondary opening, being the vertical axial aperture formed by a tube through the valve and extending a substantial distance above the same; a guide to insure the proper seating of the valve; and a secondary valve adapted to close the axial opening by the force of the water rushing upwardly therethru.

The device is so constructed that the secondary valve will open downwardly against. a slight pressure difierential, allowing the ressure above and below the valve to equalize through the axial orifice whereupon the weight of the precipitated solid material will push the main valve from its seat. The object of my invention is to provide a main valve with a secondary valve to regulate the passage of comminuted solid material in a liquid downwardly and liquid to take its place upwardly.

The articular embodiment of my invention se ected for illustration is a valve of the poppet type adapted to pass zeolites from the washing chamber downwardly into the softening chamber of automatic water softening apparatuses such as those illustrated and. described in my co-pending forming the zeolite washing chamber seapplications Serial 'No. 561,095 filed May cured thereto and a valve seat and valve for the opening between the water softening chamber and the zeolite washing chamher, all parts being shown in vertical axial section, except the secondary valve and the lower guides which are shown in full; both the main and secondary valves being closed,

with an accumulation of zeolites above the main valve,

v Fig. 2 is the same, with both main and secondary valves open, and the zeolites falling into the softening chamber, and

Fig. 3, a detail, is a cross section on the line III-III of Fig. 1.

Referring now to the drawings, 1 is the water softening tank of an automatic water softening apparatus, 2 is, the chamber in which the zeolites, 3, are washed, and finally fall through the wash water and come to rest on top of the main valve, 4 when seated upon the preferably resilient seat, 5, as

shown in Fig. 1, closing the main opening between the tank, 1, and the chamber, 2. Both tank, 1, and chamber, 2, are at all times during operation of the apparatus completely filled with liquid, and a float, 6,.

is adapted to keep the valve, 4, on the seat, 5, unless and until unseated by forces hereinafter explained.

A tube, 7 ,:with an opening, 8, therethru pierces the valve, 4, and float, 6, axially and is produced upwardly and to maintain alignment of the valve is sup lied with guides, 9, adapted to co-act with t e interior of a guide tube, 10, provided with a conical cover, 11, to keep falling zeolites out of the tube and cause them to continue their descent. The guide tube, 10, is secured to the spider, 12, on the flange, 13. The valve, 4, is further guided by a lower guide, 14, reciprocabe thru an eye of the guide, 15. A stop, 16, adapted to Contact with the guide, 15, limits the downward movement of the valve, 4.

- The secondary poppet valve, 17, loosely seated on the end of the guide, 14, above the stop, 16, is adapted to seat upon the preferably resilient secondary valve seat, 18, and close the opening, 8, through the tube, 7. The operation of the device is as follows with all the parts in the position shown in Fig. 1 and the pressure in the chamber, 1, greater than that in chamber, 2, and with the pressure in chamber, 2, increasing. As soon as the pressure in chamber, 2, is with-' in approximately one pound of that in chamber, 1, the secondary poppet valve, 17, falls off the seat, 18, partly by gravity and partly by the pressure of the resilient seat, 18. The pressures in chambers, 1 and 2, then quickly equalize through the opening, 8, in the tube,'7. Then the weight of accumulated zeolites on the valve, 4, forces it from its seat, 5, and the zeolites fall through the opening into the tank, 1. The space formerly occupied by these zeolites in the chamber, 2, is filled with water from the chamber, 1, which flows upwardly through the opening, 8, in the tube, 7. The valve, 17, is so proportioned that this comparatively gentle upward flow of displacement water does not close it.

lhe parts are now in the position shown in Fig. 2. Then the main valve, 4, either when freed of zeolites by exhaustion of the supply previously deposited upon the valve or when the weight of the zeolites is counterbalanced by a decrease of pressure in the chamber, 2, is reseated on the resilient seat, 5, by the forc exerted by the float, 6. Then when the pressure in chamber, 2, is further diminished for the purpose of drawing more zeolites into the chamber, 2, by means not shown in the drawing and not part of this invention, the pressure difi'erential thus created between chambers, 1 and 2, causes water from the tank, 1, to rush toward the opening, 8, causing the secondary poppet, 17, to seat upon the seat, 18, whereupon all the parts are again in the position shown in Fig. 1.

I claim as my invention and desire to secure by Letters Patent of the United States:

1. A compound check valve having in combination a main valve and a secondary valve both of said valves adapted to seat upwardly; the main valve adapted to be unseated by the weight of comminuted solid material precipitated thereon through the liquid above said valve; and means for reseating said main valve when said solid material has fallen ofi' it; the secondary valve adapted to close a liquid conduit through said main valve; said secondary valve adapted to be seated, after the seating of the main valve, by the liquid flow ing upwardly against the secondary valve on its way toward said secondary valve seat and to remain seated until the changing difierential pressures above and below said compound valve permit said secondary valve to fall.

2. A compound check valve having in combination a main valve with an axial orifice and a secondary valve to close said orifice; both main and secondary valves adapted to be seated from below, and the main valve to be unseated by the weightof comminuted solid material precipitated thereon through the liquid above said valve;

and means for automatically reseating said main valve when said solid material has fallen off it; said secondary valve adapted to be seated, after th main valve is seated, by the force of the liquid flowing upwardly against the secondary valve on 1ts way toward the secondary valve seat and to remain seated until the changing differential pressures above and below said compound valve permit said secondary valve to fall.

3. A compound check valve of the poppet type having in combination a float, a main valve adapted to be seated upwardly by said float and to be unseated by the weight of comminuted solid material precipitated thereon through the liquid above said valve, a substantially vertical passage through said main valve, and an upwardly seating secondary valve adapted to close the lower end of said passage, said secondary valve adapted to be seated by the liquid flowing upwardly against the secondary valve on its way toward its valve seat and to be unseated by changing difl'erential pressures above and below it.

4. A compound check valve of the poppet type having in combination a float, a main valve adapted to be seated upwardly by said float secured thereto and to be unseated by the weight of comminuted sol1d materlal precipitated thereon through the liquid above said valve, a substantially vertical axial passage through said float and mam valve, and an upwardly seating secondary valve adapted to close the lower end of sa1d axial passage, said secondary valve adapted to be seated by the liquid flowing upwardly against the secondary valve'on its way toward its valve seat and'to be unseated by changing difierential pressures above and below it. r i

5. A compound check valve, having 1n combination a float, a main valve of the poppet type adapted to be seated upwardly by said float secured thereto and to be unseated by the weight of comminuted sol1d material precipitated thereon through the l quid above said valve, a substantially vertloal axial tube through said float and main valve, and an upwardly seating secondary valve of the poppet type adapted to close the lower end of said tube. sa1d secondary valve adapted to be seated by the pressure of liquid flowing upwardly toward its yalye seat and'to be unseated whenever the liquid pressures above and below said valve device become so nearly equalized that the sec ondary valve falls by gravity.

6. A compound check valve havmg in combination a main valve of the poppet type adapted to be seated upwardly by a float secured thereto and to be'useated by the weight of comminuted solid materipl precipitated thereon through the liquid above said valv said float, a substantially vertical axial tube through said float and main valve, said tube extending upwardly above said main valve to form a guide, means adagted to co-act with the guide portion of sai tube to maintain the main valve in alignment with its seat, an upwardly seatliquid flowing-upwardly tow its valve seat and 'tobe unseated whenever the liquid pressures above and below said valve device become so nearly equalized that the secondary 15 valve falls by gravity.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

' CARL H. NORDELL. Witnesses v Knmrou Bam, Hanoi-n J. Cans. 

